Cover for a portable global positioning system



FIG. 1 is a frontal perspective view of a cover for a portable global positioning system, showing my new design;

FIG. 2 is a top plan view of FIG. 1;

FIG. 3 is a front elevational view of FIG. 1;

FIG. 4 is a rear elevational view of FIG. 1;

FIG. 5 is a left side elevational view of FIG. 1;

FIG. 6 is a right side elevational view of FIG. 1; and,

FIG. 7 is a bottom plan view of FIG. 1.

The broken line showings in all figures is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a cover for a portable global positioning system, as shown and described. 